【简答题】何首乌来源于 () 科,药用部位是 () 。
【单选题】As the director can't come to the reception, I'm representing the company __________.
【单选题】80C51单片机外部中断INTI和外部中断INT0的触发方式选择位是
【单选题】若要让51单片机外部中断INT0采用低电平触发,则( )
【单选题】单片机外部中断INT0,INT1,INT2的触发方式分别有( )种
【简答题】何首乌来源于蓼科植物,药材表面()色,切断面皮部散列()花纹,其粉末中可见()晶。
【单选题】——Can you come and play basketball with us? ——______ .
A.
Sorry, I can't. I have to finish my homework first
B.
No, I am not. I'm very busy now
C.
Yes, I do. I like it very much
【简答题】Thank you very much for your _________(invite). But I’m so sorry that I can’t come to your party tomorrow.